CLVII. GKAMINEiE (Stapf). 
25 
Florets 1-2 ; valves membranous to subhyaline, 3- 
nerved 167. Lepturcjs. 
Spikelets with their median plane tangential to the 
rhachis. 
Perennial ; glumes not or obscurely keeled, lanceo- 
late or linear, prominently 5- to many-nerved ; 
valves lanceolate, rounded on the back or keeled 
upwards ; grain tightly adhering to the valvule 168. Agropyrtjm. 
Annual ; glumes more or less keeled, at least up- 
wards, ventricose, asymmetrical, usually with a 
lateral tooth ; valves more or less ventricose, 
keeled upwards ; grain free from the valvule ... 169. Triticum. 
Spikelets in groups of 3 at the nodes of a dense spike, the 
lateral usually more or less reduced or barren 
(sometimes g in cultivated races) 170. Hordeum. 
B. Blades transversely veined or if not so, then tall shrubs with woody culms 
(171-178). 
Tribe XVIII. PHAREiE. — Spikelets heteromorphous, unisexual, monoecious, 
the £ small. Floret 1. One or both glumes of the & often minute or obso- 
lete. Fruiting valve coriaceous to cartilaginous. Lodicules 3. Stamens 
3-6. Blades flat, broad, many-nerved, often petioled. 
Fruiting valve crustaceous, shining ; fruit very like that 
of a typical Panicum ; stamens 3 ... ... ... 171. Olyra. 
Fruiting valve papery, dull, closed excepting a subapical 
or lateral hole ; fruit more or less globose ; 
stamens 6 172. Leptaspis. 
Tribe XIX. BAMBUSE^E. — Spikelets all of one kind. Florets few to many, 
rarely 1. Glumes distinct or indistinctly differentiated, i.e. passing below 
into more or less numerous bracts and sometimes having like them flowering 
branchlets or spikelets in their axil, and at the same time resembling the 
valves. Valves subherbaceous to subcoriaceous, 5- to many-nerved, 
generally awnless. Lodicules usually 3. Stamens 3, 6 or more. Styles 
2 or 3. Shrubs or trees , rarely perennial herbs (Puelliinse). Blades flat, 
many-nerved, articulated on the sheath. 
Shrubby, usually tall, with woody stems (canes). 
Stamens 3 ; spikelets variously panicled or racemose, 
1- to many-flowered : — -Sub-tribe Arundinarifnce 173. Artjndinaria. 
Stamens 6 : — Sub-tribe Bambusince. 
Spikelets in distichous dense glomerules on the 
branches of a large panicle, 2 -flowered ; fila- 
ments free ... ... ... ... ... 174. Oreobambos. 
Spikelets in dense terminal heads or in more or less 
globose whorls on long simple or panicled 
' branches, 1-3-flowered ; filaments more or less 
united ... ' ... ... ... ... ... 175. 
Small undershrubs or herbs : — Sub-tribe Puelliince. 
Filaments free ; spikelets lanceolate to linear-lanceo- 
late ; florets loosely distichous, the lower 1-3 ? , 
the others $ ; or all $ 
Filaments more or less united at the base ; florets 
closely imbricate, the terminal ? , the others £ 
or neuter. 
Spikelets much compressed in short secund racemes 
or contracted panicles 
[THERA. 
OXYTENAN- 
176. Guaduella. 
177. PUELLIA. 
